CN116075666A - Insulation panel and method for manufacturing same - Google Patents
Insulation panel and method for manufacturing same Download PDFInfo
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- CN116075666A CN116075666A CN202180055855.2A CN202180055855A CN116075666A CN 116075666 A CN116075666 A CN 116075666A CN 202180055855 A CN202180055855 A CN 202180055855A CN 116075666 A CN116075666 A CN 116075666A
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- heat insulating
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 65
- 238000009413 insulation Methods 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 106
- 239000002184 metal Substances 0.000 claims abstract description 106
- 238000003466 welding Methods 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims description 41
- 238000003825 pressing Methods 0.000 claims description 19
- 238000004378 air conditioning Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 description 12
- 238000007789 sealing Methods 0.000 description 8
- 230000032683 aging Effects 0.000 description 6
- 239000011491 glass wool Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 210000003168 insulating cell Anatomy 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/242—Slab shaped vacuum insulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
A heat insulating plate (1) is provided with a first flange part (32) formed on one edge part (31) in the axial direction of a metal flat tube (2), the first flange parts (32, 32) are overlapped and welded in a manner of closing one edge part (31), a second flange part (42) formed on the other edge part (41) in the axial direction of the metal flat tube (2), the second flange parts (42, 42) are overlapped and welded in a manner of closing the other edge part (42), and a heat insulating space (S) is arranged inside the metal flat tube (2). The welding length in the manufacture of the heat insulating plate can be shortened, the welding operation is reduced, the manufacture efficiency is improved, and the manufacture cost can be reduced.
Description
Technical Field
The present invention relates to an insulation panel having a heat insulating space provided inside a double wall and a method for manufacturing the same.
Background
Conventionally, as heat insulating plates having a heat insulating space provided inside double walls, vacuum heat insulating plates of patent documents 1 and 2 are known. The vacuum insulation panel has the following structure: the first metal plate and the second metal plate are laminated by providing a bulge portion at the center of the first metal plate and the center of the second metal plate, disposing the inner concave portion of the bulge portion so as to face each other, disposing a heat insulating space, and accommodating a heat insulating material in the heat insulating space, and forming the first metal plate and the second metal plate by sandwiching the flange portions provided on the four sides of the first metal plate in a state where the flange portions provided on the four sides of the first metal plate are overlapped on the entire periphery with the upper electrode and the lower electrode, and bonding the overlapped flange portions (edge portions) to each other by seam welding (see paragraphs [0020], [0051] to [0054], fig. 1, fig. 2, fig. 5, and paragraphs [0021], [0052] to [0055], fig. 1, fig. 2, and fig. 5 of patent document 2).
Prior art literature
Patent literature
Patent document 1: japanese patent No. 6223507
Patent document 2: japanese patent No. 6223611
Disclosure of Invention
Summary of the invention
Problems to be solved by the invention
However, in the vacuum insulation panels of patent documents 1 and 2, seam welding is required to be performed on the entire periphery of the four sides of the panel, and therefore, the welding length for welding the overlapping flange portions to each other and the working time required for welding are long. Therefore, in the production of the heat insulating plate, it is required to further shorten the welding length, reduce the welding work, and improve the production efficiency. In addition, seam welding for welding the overlapping flange portions to each other requires a large current, but if the welding length is long, the amount of current required increases, and there is another problem that the manufacturing cost increases.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an insulation board and a method for manufacturing the same, which can reduce the welding length in the manufacture of the insulation board, reduce the welding work, improve the manufacturing efficiency, and reduce the manufacturing cost.
Means for solving the problems
The heat insulating plate of the present invention is characterized in that a first flange is formed at one edge in the axial direction of a metal flat tube, the first flange is welded in a superimposed manner so as to close the one edge, a second flange is formed at the other edge in the axial direction of the metal flat tube, the second flange is welded in a superimposed manner so as to close the other edge, and a heat insulating space is provided inside the metal flat tube.
In this way, in the production of the heat insulating plate, only the flange portions of the two sides corresponding to the one edge portion and the other edge portion of the metal flat tube need be welded, and the other two opposite sides need not be welded, so that the welding length can be shortened considerably as compared with the case where welding is performed on the whole circumference of the four sides of the plate. Therefore, the welding operation in the process of manufacturing the heat insulating plate can be greatly reduced, and the manufacturing efficiency can be improved. Further, since the welding length at the time of manufacturing the heat insulating panel can be shortened, the welding cost can be reduced significantly, and the manufacturing cost can be reduced.
The heat insulating panel of the present invention is characterized in that the heat insulating space is a pressure reducing space, and a heat insulating support material is incorporated in the pressure reducing space.
In this way, in the case of a vacuum insulation panel in which the inside of the vacuum insulation panel is a reduced pressure space, there is leakage from a welded portion formed at the time of manufacturing the vacuum insulation panel as a major cause of aging of the vacuum insulation panel, but the welded portion is reduced by limiting the welded portion to two sides for the whole periphery of the panel at the time of manufacturing the insulation panel, whereby the possibility of occurrence of leakage due to aging can be remarkably reduced. Further, by incorporating the heat insulating support material in the reduced pressure space, the reduced pressure space can be stably maintained for a long period of time, and high heat insulating performance can be maintained.
The heat insulating panel according to the present invention is characterized in that the pressure reducing space is provided adjacent to two opposite sides different from two opposite sides formed by welding the one edge portion and the other edge portion, and the heat insulating support material is incorporated in a portion of the pressure reducing space adjacent to the two opposite sides.
By providing the pressure reducing space adjacent to two opposite sides different from the two opposite sides to be welded, the plate area which does not contribute to the heat insulation corresponding to the wide flange portion for welding can be reduced as much as possible in the extending direction of the plate surface, and the plate area which contributes to the heat insulation can be set to a wider range, so that the heat insulation of the vacuum insulation panel can be further improved. Further, the size of the pressure reducing space adjacent to the two opposite sides different from the two opposite sides to be welded is maintained by the heat insulating support material, so that the state of the adjacent pressure reducing space can be stably maintained for a long period of time, and the high heat insulating performance can be maintained.
The heat insulating panel according to the present invention is characterized in that the heat insulating space is provided adjacent to two opposite sides different from two opposite sides formed by welding the one edge portion and the other edge portion.
By providing the heat insulating space adjacent to two opposite sides different from the two opposite sides to be welded, the plate area that does not contribute to heat insulation corresponding to the wide flange portion for welding can be reduced as much as possible in the extending direction of the plate surface, and the plate area that contributes to heat insulation can be set to a wider range, and the heat insulation of the heat insulating plate can be further improved.
The heat insulating plate of the present invention is characterized in that the flat metal tube is formed by pressing and flattening.
Thus, the thickness of the heat insulating space in the panel can be stably maintained for a long period of time by the elastic restoring force due to the pressing flattening, and the product life can be prolonged.
The method for manufacturing the heat insulating plate of the present invention is a method for manufacturing the heat insulating plate of the present invention, and is characterized by comprising a step of forming a flat metal tube by pressing and deforming a metal tube so as to crush the metal tube.
Thus, the metal tube is pressed and deformed to form the metal flat tube, so that the thickness of the heat insulating space in the panel can be stably maintained for a long period of time by the elastic restoring force generated by the pressing and deforming by the pressing and flattening, and the product life can be prolonged.
The method for manufacturing an insulation board according to the present invention is characterized by comprising: a first step of pressing and deforming a metal tube so as to flatten the metal tube, thereby forming a metal flat tube; a second step of forming a first flange portion at one edge portion in the axial direction of the flat metal tube, and overlapping and welding the first flange portion so as to close the one edge portion; a third step of incorporating a heat insulating support material into the metal flat tube; and a fourth step of forming a second flange portion on the other edge portion in the axial direction of the flat metal tube, and overlapping and welding the second flange portion so as to close the other edge portion.
In this way, in the production of the heat insulating plate, only the flange portions of the two sides corresponding to the one edge portion and the other edge portion of the metal flat tube need be welded, and the other two opposite sides need not be welded, so that the welding length can be shortened considerably as compared with the case of welding over the whole circumference of the four sides of the plate. Therefore, the welding operation in the process of manufacturing the heat insulating plate can be greatly reduced, and the manufacturing efficiency can be improved. Further, the welding length at the time of manufacturing the heat insulating panel can be shortened, the welding cost can be reduced greatly, and the manufacturing cost can be reduced. In addition, when the heat insulating support material is incorporated into the interior of the flat metal tube, a flat metal tube of a bag-like intermediate material that is open at one side may be used, and the flat metal tube may be housed in a bag-like shape from the open portion, in other words, may be packed, so that the heat insulating support material may be easily incorporated into the flat metal tube, and the heat insulating support material may be accurately incorporated into a desired interior region of the flat metal tube, and may be incorporated at a desired density such as a high density.
The method for manufacturing an insulation board according to the present invention is characterized by comprising: a first step of pressing and deforming a metal tube so as to flatten the metal tube, thereby forming a metal flat tube; a second step of incorporating a heat insulating support material into the metal flat tube; a third step of forming a first flange portion at one edge portion in the axial direction of the flat metal tube, and overlapping and welding the first flange portion so as to close the one edge portion; and a fourth step of forming a second flange portion on the other edge portion in the axial direction of the flat metal tube, and overlapping and welding the second flange portion so as to close the other edge portion.
In this way, in the production of the heat insulating plate, only the flange portions of the two sides corresponding to the one edge portion and the other edge portion of the metal flat tube need be welded, and the other two opposite sides need not be welded, so that the welding length can be shortened considerably as compared with the case of welding over the whole circumference of the four sides of the plate. Therefore, the welding operation in the process of manufacturing the heat insulating plate can be greatly reduced, and the manufacturing efficiency can be improved. Further, since the welding length at the time of manufacturing the heat insulating panel can be shortened, the welding cost can be reduced significantly, and the manufacturing cost can be reduced. Further, since the heat insulating support material is incorporated into the metal flat tube before the edges of both the axial directions of the metal flat tube are closed, when using a heat insulating support material in which fibers such as glass wool are aligned perpendicular to the heat conduction direction, or a heat insulating support material in which layers of fibers such as glass wool are laminated so as to exhibit maximum heat insulating properties, the direction of the heat insulating support material is adjusted at the edges in the open state of both the edges, and the heat insulating support material can be easily and reliably incorporated into the metal flat tube while maintaining the directivity.
In the method for manufacturing an insulation board according to the present invention, in the fourth step, a part in the side direction is left as an exhaust port, and a region where the second flange portion is overlapped is welded, and the inside of the metal flat tube is evacuated from the left exhaust port, and then the exhaust port is closed.
As a result, although leakage from the welded portion formed at the time of manufacturing the vacuum insulation panel is a major cause of aging of the vacuum insulation panel, the possibility of leakage due to aging can be remarkably reduced by limiting the welded portion to two sides for the entire periphery of the panel at the time of manufacturing the insulation panel to reduce the welded portion. Further, by incorporating the heat insulating support material in the reduced pressure space, the reduced pressure space can be stably maintained for a long period of time, and high heat insulating performance can be maintained. Further, since the exhaust port remaining without welding the second flange portion is vacuum-exhausted and closed, a process of forming another exhaust port in the peripheral wall of the flat metal tube is not required, and the manufacturing operation can be made more efficient.
Effects of the invention
According to the invention, the welding length of the heat insulation plate during manufacturing can be shortened, the welding operation is reduced, the manufacturing efficiency is improved, and the manufacturing cost can be reduced.
Drawings
Fig. 1 is a perspective view showing an insulation panel according to an embodiment of the present invention.
Fig. 2 is a plan view showing an insulation panel according to an embodiment.
Fig. 3 (a) is an enlarged sectional view of A-A of fig. 2, and (B) is an enlarged sectional view of B-B of fig. 2.
Fig. 4 is an enlarged view of a portion C of fig. 3.
Fig. 5 is an enlarged view of the portion D of fig. 3.
Fig. 6 is an enlarged view of the portion E of fig. 3.
Fig. 7 (a) to (c) are process explanatory views illustrating the first half of the process for manufacturing the heat insulating panel according to the embodiment.
Fig. 8 (a) and (b) are process explanatory views for explaining the latter half of the process for manufacturing the heat insulating panel according to the embodiment.
Fig. 9 is an enlarged partial cross-sectional view showing a portion corresponding to fig. 4 in a modification of the heat insulating panel according to the embodiment.
Detailed Description
[ insulation sheet of embodiment and method for manufacturing the same ]
As shown in fig. 1 to 6, the heat insulating plate 1 according to the embodiment of the present invention is made of a metal material such as aluminum or stainless steel, and is constituted by a metal flat tube 2 formed by flattening a metal tube 2m by pressing. One edge 31 in the axial direction of the flat metal tube 2 is flattened to form a first flange 32, and the first flange 32 are welded by a welding portion 33 in a state where the one edge 31 is closed and the first flange 32 are overlapped. The welded portion 33 is formed to extend along the extending direction of the overlapped first flange portions 32, and is formed over the entire length of the side 61 described later.
The other edge 41 in the axial direction of the flat metal tube 2 is flattened to form a second flange 42, and the other edge 41 is closed to overlap the second flanges 42 and 42, and welded by a welding portion 43. The welded portion 43 is formed to extend along the extending direction of the overlapped second flange portions 42 and 42, and is formed over the entire length of the side 61 except for a closing portion 44 for closing an exhaust port for vacuum exhaust in the side 61 described later. The welded portions 33 and 43 may be formed by an appropriate welding method, which can be applied, for example, seam welding or laser welding.
The thickness of the metal flat tube 2 is set to an appropriate value within a range where the heat insulating sheet of the present invention can be formed, and is preferably set to, for example, 0.05mm to 1.0mm. Further, for example, when the thickness of the intermediate region in the axial direction between the peripheral region of one edge portion 31 and the peripheral region of the other edge portion 41 of the flat metal tube 2 is set to be considerably small, such as 0.1mm or less, the thickness of the peripheral region of the one edge portion 31 forming the first flange portion 32 and the thickness of the peripheral region of the other edge portion 41 forming the second flange portion 42 are set to be 0.3mm to 0.5mm, etc., and the thickness is set to be thicker than the thickness of the intermediate region, so that the welded portions 33 and 43 are preferably formed.
A heat insulating space S is provided inside the flat metal tube 2 closed by the welded portions 33 and 43. The heat insulating space S of the heat insulating panel 1 of the present embodiment is a reduced pressure space in which the heat insulating support material 5 is incorporated, and the heat insulating panel 1 constitutes a vacuum heat insulating panel. The heat insulating support material 5 to be incorporated may be a suitable material that can exert heat insulating properties against the outside air pressure of the heat insulating panel 1, and may be a material in which a fibrous material such as asbestos or glass wool is filled at a desired density, foamed plastic, or the like. The heat insulating sheet 1 of the present embodiment is a vacuum heat insulating sheet in which the heat insulating space S is a reduced pressure space, but may be a heat insulating sheet in which the heat insulating space S is not a reduced pressure space but an air layer.
The two opposite sides 61, 61 welded to the one edge 31 and the other edge 41 of the heat insulating plate 1 by the welding portion 33 and the welding portion 43 are formed by bending the peripheral wall 21 of the flat metal tube 2, respectively, the two opposite sides 62, 62 different from the two opposite sides 61, 61. In the heat insulating panel 1 of the present embodiment, the curved portion 22 having a gentle mountain shape in cross section is formed by bending the peripheral wall 21 of the flat metal tube 2 in the two opposing sides 62, 62 (see fig. 4).
Further, a heat insulating space S is provided adjacent to the two opposing sides 62, and in the present embodiment, a heat insulating space S is provided adjacent to the two opposing sides 62, 62 as a pressure reducing space. The heat insulating support material 5 is also incorporated in a portion of the heat insulating space S that is a decompression space close to the two opposing sides 62, 62. That is, the region capable of exhibiting the heat insulating performance is provided at a position close to the two opposing sides 62, 62 formed by bending the peripheral wall 21 of the flat metal tube 2.
Next, a process for manufacturing the heat insulating sheet 1 according to the present embodiment will be described. In manufacturing the heat insulating panel 1, a metal tube 2m made of a metal material such as aluminum or stainless steel is used, and as indicated by the thick line arrow in fig. 7 (a), the metal tube 2m is deformed by pressing so as to be flattened, and the metal flat tube 2 is formed by pressing and flattening (see fig. 7 (a) and (b)). Then, the first flange portion 32 is formed by pressing and deforming one edge portion 31 in the axial direction of the flat metal tube 2 so as to be flattened, the first flange portions 32 and 32 are overlapped and welded so as to close the one edge portion 31, and the welded portion 33 is formed so as to extend in the extending direction of the overlapped first flange portions 32 and 32 (see fig. 7 (c), 2, and 5).
After one edge 31 of the flat metal tube 2 is closed, a fiber material such as asbestos or glass wool is filled with a desired density from the other edge 41 in an open state, and the heat insulating support material 5 is incorporated in the flat metal tube 2 (see fig. 8 (a)). Then, the second flange portion 42 is formed by press-deforming the other edge portion 41 in the axial direction of the flat metal tube 2 so as to be flattened, the second flange portions 42 and 42 are overlapped and welded so as to close the other edge portion 42, and the welded portion 43 is formed so as to extend in the extending direction of the overlapped second flange portions 42 and 42 (see fig. 8 (b), 2, and 6).
In the step of overlapping and welding the second flange portions 42, 42 so as to close the other edge portion 42, the welded portion 43 is formed over the entire length of the side 61 in the case of manufacturing the heat insulating panel in which the heat insulating space S is an air layer, but in the case of the heat insulating panel 1 of the present embodiment in which the heat insulating space S is a pressure reducing space, a part in the side direction is left as an exhaust port and a region where the second flange portions 42, 42 are overlapped is welded by the welded portion 43. Then, the inside of the metal flat tube 2 is evacuated from the remaining evacuation port, and then the evacuation port is closed by a sealing portion 44 by soldering, glass sealing, or the like.
In the case of manufacturing the heat insulating panel of the present invention in which the heat insulating space S is a reduced pressure space, the following steps may be applied to appropriate steps among the entire manufacturing steps, instead of the step of leaving the exhaust port and sealing the exhaust port by the sealing portion 44 by welding the welding portion 43: an exhaust port is formed in the exhaust region ER of the peripheral wall 21 of the metal tube 2m or the metal flat tube 2, and the interior of the metal flat tube 2 is evacuated from the exhaust port, and then the exhaust port is closed by a sealing portion by soldering, glass sealing, or the like.
According to the present embodiment, in the production of the heat insulating panel 1, only the flange portions 31 and 41 of the two sides 61 and 61 corresponding to the one edge portion 31 and the other edge portion 41 of the flat metal tube 2 need be welded, and the other two opposite sides 62 and 62 need not be welded, so that the welded length can be shortened considerably compared with the case of welding over the whole circumference of the four sides of the panel. Therefore, the welding work at the time of manufacturing the heat insulating panel 1 can be greatly reduced, and the manufacturing efficiency can be improved. Further, since the welding length at the time of manufacturing the heat insulating panel 1 can be shortened excessively, the welding cost can be reduced significantly, and the manufacturing cost can be reduced.
In addition, in the case of the vacuum insulation panel in which the inside of the insulation panel 1 is a reduced pressure space, there is leakage from the welded portion formed at the time of manufacturing the insulation panel as a major cause of aging of the vacuum insulation panel, but by limiting the welded portions 33 and 43 to two sides for the entire periphery of the panel at the time of manufacturing the insulation panel 1, the possibility of occurrence of leakage due to aging can be remarkably reduced. Further, by incorporating the heat insulating support material 5 in the reduced pressure space, the reduced pressure space can be stably maintained for a long period of time, and high heat insulating performance can be maintained.
Further, by providing the pressure reducing space near the two opposing sides 62, 62 different from the two opposing sides 61, 61 to be welded, the plate area that does not contribute to the heat insulation corresponding to the wide flange portion for welding can be reduced as much as possible in the extending direction of the plate surface, and the plate area that contributes to the heat insulation can be set in a wider range, and the heat insulation of the vacuum insulation panel can be further improved. The size of the pressure reducing space adjacent to the two opposing sides 62, 62 is maintained by the heat insulating support material 5, so that the state of the adjacent pressure reducing space can be stably maintained for a long period of time, and the high heat insulating performance can be maintained. In the case where the heat insulating space S is not a reduced pressure space but an air layer, the heat insulating space S is provided near the two opposite sides 62, 62 different from the two opposite sides 61, 61 to be welded, so that the plate area which does not contribute to the heat insulation property corresponding to the wide flange portion for welding can be reduced as much as possible in the extending direction of the plate surface, and the plate area which contributes to the heat insulation property can be provided in a wider range, and the heat insulation property of the heat insulating plate can be further improved.
Further, by pressing and deforming the metal tube 2m so as to crush the metal tube 2m and flattening the metal tube by pressing to form the metal flat tube 2, the thickness of the heat insulating space in the panel can be stably maintained for a long period of time by the elastic restoring force generated by the flattened pressing and deforming or in a state deformed by the pressing and flattening, and the product life can be prolonged.
In addition, when the heat insulating support material 5 is incorporated into the interior of the flat metal tube 2 during the production of the heat insulating panel 1, the flat metal tube 2 is housed, in other words, packed, from the open portion by the production process using the bag-shaped intermediate material having one side open, so that the heat insulating support material 5 can be easily incorporated into the flat metal tube 2, and the heat insulating support material 5 can be accurately incorporated into a desired interior region of the flat metal tube 2, and can be incorporated at a desired density such as a high density.
In addition, in the case of using a manufacturing process in which vacuum evacuation is performed from the evacuation port left without welding the second flange portion 42 and the sealing is performed by the sealing portion 44, a process in which a separate evacuation port is formed in the peripheral wall 21 of the flat metal tube 2 is not required, and the manufacturing operation can be made more efficient.
[ the scope of inclusion of the invention disclosed in this specification ]
The invention disclosed in the present specification includes, in addition to the respective inventions and embodiments listed as the invention, inventions defined by changing the content of the above part to other content disclosed in the present specification, inventions defined by adding other content disclosed in the present specification to the above content, or inventions defined by deleting the content of the above part to the extent that the effect of the part can be obtained as a superior conceptualization, as applicable. The invention disclosed in this specification also includes the following modifications and additional matters.
For example, in the heat insulating panel 1 of the above embodiment, the curved portions 22 of the two opposing sides 62, 62 are gently mountain-shaped in cross-section, but as shown in the modification of fig. 9, the peripheral wall 21 of the flat metal tube 2 may be curved to form curved portions 22a having a substantially コ -shaped cross-section. In the modification for forming the bent portion 22a, the heat insulating support material 5 may be incorporated in a portion of the heat insulating space S that is the reduced pressure space adjacent to the two opposing sides 62, 62.
Further, as necessary, the flange portion having a shape corresponding to fig. 5 and 6 can be formed by further shaping the shape of the heat insulating plate into a rectangular shape or the like in the two opposing sides 62, 62 different from the two opposing sides 61, 61 to be welded. In this case, if the protruding amount of the distal ends of the flange portions in the two sides 62, 62 is smaller than the distal ends of the first flange portion 32 and the second flange portion 42, the plate area that does not contribute to the heat insulation can be reduced, which is preferable.
In addition to the structure of the heat insulating sheet 1 having a substantially square rectangular top view shape as exemplified in the above figures, the top view shape of the heat insulating sheet of the present invention may be a substantially rectangular top view shape having a longer length in the axial direction, for example, in which the length of each side 62 of the two sides 62, 62 is longer than the length of each side 61 of the two sides 61, and the top view shape of the heat insulating sheet is an appropriate shape within a range to which the top view shape is applicable. According to the heat insulating plate having the substantially rectangular shape in plan view, the welding length can be further reduced as compared with the structure of the heat insulating plate in which four sides are welded, and the effect of the welding operation can be reduced.
Further, instead of the example of the process for producing the heat insulating panel 1 according to the above embodiment, the heat insulating panel 1 may be produced by a process for producing a modified example in which the metal tube 2m is flattened to press-deform the metal tube 2m to form the metal flat tube 2, then the heat insulating support material 5 is incorporated into the metal flat tube 2, then the first flange portion 32 is formed by press-deforming one edge portion 31 in the axial direction of the metal flat tube 2 to press-deform the same, the first flange portions 32 and 32 are overlapped and welded to close the one edge portion 31, the welded portion 33 is formed to extend in the extending direction of the overlapped first flange portions 32 and 32, the second flange portion 42 is formed to press-deform the other edge portion 41 in the axial direction of the metal flat tube 2 to press-deform the same, the second flange portions 42 and 42 are overlapped and welded to close the other edge portion 42, and the welded portion 43 is formed to extend in the extending direction of the overlapped second flange portions 42 and 42. According to the manufacturing process of this modification, for example, when using a heat insulating support material in which fibers such as glass wool are aligned perpendicular to the heat conduction direction, or a heat insulating support material in which a layer material in which fibers such as glass wool are aligned perpendicular to the heat conduction direction is laminated, the direction of the heat insulating support material is adjusted at both edges in an open state, for example, when the heat insulating support material has directionality so as to exert heat insulating properties to the maximum extent, the heat insulating support material can be easily and reliably built in and installed in the flat metal tube while maintaining directionality.
Industrial applicability
The present invention can be used for, for example, heat insulating plates for refrigerators, heat insulating houses, building materials, etc., heat insulating plates constituting a container for insulating a battery of an automobile, etc., heat insulating plates for insulating cells of a battery of an automobile, etc.
Description of the reference numerals
1 … insulation panel 2 … metal flat tube 21 … peripheral wall 22, 22a … bent portion 2m … metal tube 31 … one edge portion 32 … first flange portion 33 … welded portion 41 … other edge portion 42 … second flange portion 43 … welded portion 44 … closed portion 5 … insulation support material 61, 62 … side S … insulation space ER … exhaust area.
Claims (9)
1. An insulation panel, characterized in that,
a first flange part is formed on one edge part of the metal flat tube in the axial direction, the first flange part is overlapped and welded in a mode of closing the one edge part,
a second flange part is formed on the other edge part of the metal flat tube in the axial direction, and the second flange part is overlapped and welded in a mode of closing the other edge part,
a heat insulating space is provided inside the metal flat tube.
2. Insulation sheeting according to claim 1 wherein,
the heat insulating space is a pressure reducing space, and a heat insulating support material is disposed in the pressure reducing space.
3. Insulation sheeting according to claim 2 wherein,
the pressure reducing space is provided near two opposite sides different from two opposite sides formed by welding the one edge part and the other edge part,
the heat insulating support material is incorporated in a portion of the pressure reducing space adjacent to the two sides.
4. Insulation sheeting according to claim 1 wherein,
the heat insulating space is provided adjacent to two opposite sides different from two opposite sides formed by welding the one edge portion and the other edge portion.
5. Insulation sheeting according to any one of claims 1 to 4 wherein,
the metal flat tube is formed by pressing and flattening.
6. A method for manufacturing an insulation panel according to claim 5, wherein,
the method includes a step of pressing and deforming a metal tube so as to crush the metal tube, thereby forming a metal flat tube.
7. A method for manufacturing a heat insulating plate is characterized by comprising:
a first step of pressing and deforming a metal tube so as to flatten the metal tube, thereby forming a metal flat tube;
a second step of forming a first flange portion at one edge portion in the axial direction of the flat metal tube, and overlapping and welding the first flange portion so as to close the one edge portion;
a third step of incorporating a heat insulating support material into the metal flat tube; a kind of electronic device with high-pressure air-conditioning system
And a fourth step of forming a second flange portion on the other edge portion in the axial direction of the flat metal tube, and overlapping and welding the second flange portion so as to close the other edge portion.
8. A method for manufacturing a heat insulating plate is characterized by comprising:
a first step of pressing and deforming a metal tube so as to flatten the metal tube, thereby forming a metal flat tube;
a second step of incorporating a heat insulating support material into the metal flat tube;
a third step of forming a first flange portion at one edge portion in the axial direction of the flat metal tube, and overlapping and welding the first flange portion so as to close the one edge portion; a kind of electronic device with high-pressure air-conditioning system
And a fourth step of forming a second flange portion on the other edge portion in the axial direction of the flat metal tube, and overlapping and welding the second flange portion so as to close the other edge portion.
9. Method for manufacturing insulation sheeting according to claim 7 or 8, wherein,
in the fourth step, a part of the side direction is left as an exhaust port, and a region where the second flange portion is overlapped is welded, and the inside of the flat metal tube is vacuum-exhausted from the left exhaust port, and then the exhaust port is closed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020145980A JP2022040991A (en) | 2020-08-31 | 2020-08-31 | Heat insulating panel and manufacturing method thereof |
| JP2020-145980 | 2020-08-31 | ||
| PCT/JP2021/024046 WO2022044520A1 (en) | 2020-08-31 | 2021-06-24 | Thermal insulation panel and method for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116075666A true CN116075666A (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180055855.2A Pending CN116075666A (en) | 2020-08-31 | 2021-06-24 | Insulation panel and method for manufacturing same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230220946A1 (en) |
| JP (1) | JP2022040991A (en) |
| CN (1) | CN116075666A (en) |
| WO (1) | WO2022044520A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166069A (en) * | 1984-09-10 | 1986-04-04 | 株式会社日立製作所 | Vacuum heat-insulating material |
| JP2001219281A (en) * | 2000-02-07 | 2001-08-14 | Shin Sangyo Souzou Kenkyu Kiko | Method ad apparatus for manufacturing vacuum forming body |
| JP2002130583A (en) * | 2000-10-26 | 2002-05-09 | Zojirushi Corp | Method for manufacturing vacuum insulation body |
| JP2006329482A (en) * | 2005-05-24 | 2006-12-07 | Toshiba Corp | Refrigerator |
| JP5280302B2 (en) * | 2009-06-04 | 2013-09-04 | 象印マホービン株式会社 | Vacuum insulation panel and method for manufacturing the same |
| CN102892545B (en) * | 2010-05-18 | 2015-04-01 | 三菱电机株式会社 | Beam welding method, vacuum packaging method, and vacuum heat-insulation material produced by vacuum packaging method |
| JP5356585B2 (en) * | 2011-08-09 | 2013-12-04 | パナソニック株式会社 | Sealed container, method for manufacturing the same, and vacuum insulator |
| KR20170047955A (en) * | 2015-10-26 | 2017-05-08 | 삼성전자주식회사 | Vacuum heat insulating material, the method of manufacturing the same and refrigerator including the same |
-
2020
- 2020-08-31 JP JP2020145980A patent/JP2022040991A/en active Pending
-
2021
- 2021-06-24 WO PCT/JP2021/024046 patent/WO2022044520A1/en active Application Filing
- 2021-06-24 CN CN202180055855.2A patent/CN116075666A/en active Pending
- 2021-06-24 US US18/021,311 patent/US20230220946A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022040991A (en) | 2022-03-11 |
| US20230220946A1 (en) | 2023-07-13 |
| WO2022044520A1 (en) | 2022-03-03 |
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